#define _CRT_SECURE_NO_WARNINGS 1
using namespace std;
#include<iostream>
class Person
{
public:
	string  _name = "Y_Yao";
	int _age;
};
class Student: virtual public Person
{

protected:
	int _stuid = 123;
};
class Teacher : virtual public Person
{

};
class Assistant :public Teacher, public Student
{

};
int main()
{
	Assistant s;
	cout << s._name << endl;
	return 0;
}
